Not saying they are perfect,but they are concise, and tell you all you really need to know about these two characters' looks. If looks have meaning... a character identifies with mom's side of the family more than dad's because of how they look, or GRRM, dark haired children of the king, then by all means detail is good.
To me, it's about knowing when to be concise and when to untie the bow and let things open up. That's where the skill lies. I hate using this term, but this is all about Show and Telling, knowing when to show, and knowing when to tell, and how much.
Concise taken to the extreme can be cold and with zero immersion. I mean LOTR could be condensed into something like this.
Two hobbits set out to destroy an evil ring by throwing it into the fires of MT. Doom. They met many interesting people and did many interesting things. Then, they destroyed the ring. The End.
Doesn't exactly capture the imagination does it?
I'll not bore you with the other end of the extreme. Not enough words on the internet for that.